if body is nullable: the assertion is satisfied, return der(tail)
For people living outside the Middle East, the main concern of the Iran war has been the impact on energy prices. The Gulf produces about a third of the world’s crude exports and energy revenues underpin national economies. Fighting has already halted tanker traffic through key shipping routes and disrupted port activity, forcing some producers to curb exports as storage tanks fill.
，推荐阅读新收录的资料获取更多信息
各地各部门身处一域，“时刻关注党中央在关心什么、强调什么，深刻领会什么是党和国家最重要的利益、什么是最需要坚定维护的立场”，才能找准为政的定盘星。，这一点在新收录的资料中也有详细论述
В Тегеране пролились нефтяные дожди и предупредили о кислотных14:17。新收录的资料对此有专业解读